#include <iostream>
using namespace std;
int main(){
    int a = 2;
    char b = 'z';
    char buf[32] ={"whaduhp;awiudr"};
    cout << "hello world\n"<< a <<endl;//标准输出流对象，标准输出流类--ostream 标准输入流类 istream;
    cout << "buf\n" << buf <<endl;
    cout << b<<"\n"<<endl;
   // cin >> a >> b;
    cout << "a" <<a<< endl;
    cout << b << "b\n";
    cout << "hello"<<endl;
       cin >> a,b;
           cout << "a" <<a<< endl;
    cout << b << "b\n";
    int &t = a;
    int &c = t;
    
}